MTK Android Settings "about the phone" Information parameter modification

In the file Packages/apps/settings/src/com/android/settings/deviceinfosettings.java

Setstringsummary ("Build_number", Build.display);

Specifies the setting--about the device--version number.

Build.display is the DISPLAY variable in the Build class, in file Frameworks/base/core/java/android/os/build.java:

public static final String DISPLAY = getString ("Ro.build.display.id");

When the Android system runs, it will read the corresponding string in the/system/build.prop file;

Ro.build.display.id in File build/tools/buildinfo.sh: (General modifications can be directly in the buildinfo.sh to modify the settings "about the phone" information, special as follows)

echo "Ro.build.display.id= $BUILD _display_id"

The build/tools/buildinfo.sh file will write the contents to the/system/build.prop file for Java files to read

and build_display_id in the file Build/core/makefile:

BUILD_DISPLAY_ID: = $ (build_id). $ (Build_number)

Where build_id is assigned in BUILD/CORE/BUILD_ID.MK

build_id: = Openmaster

Build_number is assigned in BUILD/CORE/VERSION_DEFAULTS.MK:

Build_number: = eng.$ (USER). $ (shell date +%y%m%d.%h%m%s)

Therefore, the compilation Time field appears in the version number.

Ro.build.display.id the Build.prop file that remains under system after compiling.

Summary: To modify the version number, you can modify the 1 by two sections. Modify the Java file so that it is written directly to death; 2. Modify the compilation system;

============================

Tracking Method :

1. First open MID under 中文版, view Setting--about tablet--- Build number

2, to source/packages/apps/settings/res/, Grep-rn "Buildnumber"./Find the following information

./values/strings.xml:1798: <string name= "Build_number" >build number</string>

3, then Grep-rn "Build_number"./Find the following information

./xml/device_info_settings.xml:117: <preference android:key= "Build_number"
./xml/device_info_settings.xml:119:android:title= "@string/build_number"

4, Vim./xml/device_info_settings.xml, find the following information

<!--detailed build version--
<preference android:key= "Build_number"//This key is specified in the Java file Build_number
Style= "? Android:preferenceinformationstyle"
Android:title= "@string/build_number"
android:summary= "@string/device_info_default"/>

Explanation: The above title part is the title name displayed in mid, and key is the content of the title, next to the Java file to find the corresponding key build_number;

5, the current directory packages/apps/settings/src/, the implementation of Grep-rn "Build_number"./Find the following information

./com/android/settings/deviceinfosettings.java:57:

private static final String Key_build_number = "Build_number";

6, Vim./com/android/settings/deviceinfosettings.java, through Key_build_number find the following information in the current file:

Setstringsummary (Key_build_number, Build.display);

For example:

Setstringsummary (Key_device_model, "gt-s7582");
Setstringsummary (Key_build_number, "IMM761. S7582ZCAL2G ");//Old values IMM761. S7582zcalk2

MTK Android Settings "about the phone" Information parameter modification